The green scale is a serious sucking pest of coffee, particularly Arabica.
Nymphs and adults sucks sap from undersurface of the leaves, green shoots, spikes and berries.
Upward curling and tender twigs drop
Honeydew excrete – development of sooty mould fungus
Heavy loss of the sap causes debility or even death of the plant.
Ants movement
Nymphs – pale yellow colour
Adult - flat, oval, light green, blackish spots on dorsum
Control ants as in the case of mealy bugs.
Remove and burn weeds which harbour the scale.
Spray the affected patches quinolphos 25 EC @ 120 ml using a gator sprayer in 200 l of water and add 200 ml of any agricultural wetting agent in 200 l of the spray solution.
